From: Keir Fraser <keir.xen@gmail.com>
To: Olaf Hering <olaf@aepfle.de>
Cc: xen-devel@lists.xen.org
Subject: Re: fixed location of share info page in HVM guests
Date: Mon, 22 Oct 2012 13:15:04 +0100 [thread overview]
Message-ID: <CCAAF758.421E4%keir.xen@gmail.com> (raw)
In-Reply-To: <20121022185036.GA15348@aepfle.de>
On 22/10/2012 19:50, "Olaf Hering" <olaf@aepfle.de> wrote:
>> Okay, that was a bit too clever, trying to hide between IOAPIC and LAPIC
>> pages. How about a bit lower in memory -- FE700000-FE7FFFFF?
>>
>> Everything in range FC000000-FFFFFFFF should already be marked
>> E820_RESERVED. You can test that, and also see
>> tools/firmware/hvmloader/e820.c:build_e820_table() (and note that
>> RESERVED_MEMBASE == FC000000).
>>
>> Can document in hvmloader/config.h and have mem_alloc() test against it
>> rather than hvm_info->reserved_mem_pgstart.
>
> I came up with this (perhaps whitespace damaged) change, the guest still boots
> ok.
> The asl part is just copy&paste from the HPET part.
Is there any point encoding this in the DSDT? I thought the guest OS needs
to access the shared info area earlier than it is able to decode the DSDT?
-- Keir
next prev parent reply other threads:[~2012-10-22 12:15 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-27 17:55 fixed location of share info page in HVM guests Olaf Hering
2012-08-27 18:10 ` Keir Fraser
2012-08-27 21:32 ` Olaf Hering
2012-08-27 21:51 ` Keir Fraser
2012-08-27 21:56 ` Olaf Hering
2012-08-28 0:13 ` Keir Fraser
2012-08-28 8:23 ` Olaf Hering
2012-08-28 11:40 ` Keir Fraser
2012-08-28 12:42 ` Olaf Hering
2012-08-28 13:35 ` Keir Fraser
2012-08-31 23:43 ` Konrad Rzeszutek Wilk
2012-10-23 19:49 ` Olaf Hering
2012-10-24 7:31 ` Jan Beulich
2012-10-24 14:54 ` Olaf Hering
2012-10-22 18:50 ` Olaf Hering
2012-10-22 12:15 ` Keir Fraser [this message]
2012-10-23 7:34 ` Jan Beulich
2012-10-23 20:27 ` Olaf Hering
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